Steam-generator



2 Shee'tsSheet 1.

(No Model.)

W. M. BROWN.

STEAM GENERATOR.

Patented Oct. 23, 1888.

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N PETERS. FhuKu-Llllwgm'pher. Washingtum n. c,

(No Model.) 2 Sheets-Sheet 2.

W. M. BROWN.

STEAM GENERATOR.

No. 391,400. Patented Oct. 23, 1888;

fi i/Wasw: 7 1 I UNTTEn STATES PATENT OEETEE.

\VALTER MORTON BROVN, OF ALBANY, NEW YORK.

STEAM-GENERATOR.

SPECIFICATION forming part. of Letters Patent No. 391,400, dated Gets-be: 23, 1888.

Application filed July 19. 1888.

To aZZ whom it may concern.-

Be it known that I. \VALTER MoRroN BROWN, a citizen of the United States, residing at Albany, in the county of Albany and State of NewYork, have invented certain new and useful Improvements in Steam-Generators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, refcrence being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention is an improvement on that shown in Letters Patent granted me Novenn her 1, 1887, No. 372,298, for attachments for heating coils and systems of pipes, and an improvement upon that shown in my steam-generator, Serial No. 274,780, filed May 23, 1888; and the object of this invention is to provide a hood or bonnet for water heating and circulating pipes that shall not only so cover the water-tube as to compel the heat, flame, and products of combustion to surround or clasp the water-tube, but one that shall aid and assist in the circulation of the water to be heated, and which shall in itself be a part and portion of the water-heating surface. I have therefore invented a hood or bonnet which is in form or shape like those referred to above, but it differs from them in being a tube and capable of containing a portion of the water to be heated and circulated, and, as shown in the drawings, as each end of the hood is in communication with the water-heads of the boiler, it is a water-tube in itself, differing from the round water-tube under it only in shape. I have shown in the drawings a form of steamgenerator having only one round water-tube and one circulating and heating hood, which form of boiler may be advantageously used for green-house or dwelling-house steam or hotwater heating purposes; but it is evident that by multiplying the round water-tubes and circulating and heating hoods, boilers of any size and capacity may be made, -and also it is evident that any form of water-head may be used, as, for instance, round lap-welded tubes, into which the ends of the round water-tubes and circulating-hoods may be entered by use of cast or drop-forged flanged collars, or by flanging the ends of the water-circulating hoods and riveting them to the upright round tubes. The manner of attaching them together is not material, and will readily suggest itself to any one skilled in the art of boiler-making. I have shown the circulating hood as being formed of a continuous conduit over the round watertnbe; but I do not confine myself to this special form of construction, although I prefer it, as any form of circulating hood that will hood each separate water-tube or a series of water-tubes, so that the flame and products of combustion of the burning gas will be compelled to absolutely encircle them, may be used, if desired.

Having set forth the nature and object of my invent-ion, I proceed to the description thereof.

In the drawings, Fig. 1 shows a side elevation of a steanrboiler having a water-tube and water-circulating hood; Fig. 2, a front elevation thereof; Fig. 3, a longitudinal section, and Fig. 4 a crosssection taken on line X X of Fig. 3.

Similarletters refer to similar parts th roughout the several views.

A shows the water heating and circulating hood; B, the round water-tube covered and hooded by A; G, the gas-burner or gas-pipe; D D, the water-heads of the boiler; E, the steam and water drum.

H in Fig. 3 shows pipes passing through the crown of the water heating and circulating hood and expanded therein, and their ends turned over, making an outlet for the escape of the products of combustion from under the hood.

J shows the perforations in the gas-pipe, and K in Fig. 4 shows stay-bolts in the hood A for strengthening it, if desired.

The operation of the invention is as follows: The gas being lighted at the burners J, the flame impinges upon the bottom of the watertube B, and is, with the products of combustion, compelled to pass around pipe B and under hood A, and escapes through openings H, and in so doing the inner surface of the flame plays actively upon tube B and heats it by direct contact, and the outside surface of the larger part of the flame strikes against the under side of the hood A and heats it and its contents, thus bringing both surfaces of the flame into direct and active contact with por tions of the heating-surface, and thus extracting the greatest amount of heat from it possible and creating a greater circulation in the boiler and a more extended heatingsurface.

While I have shown my steam-generator as only constructed for burning gas as fuel, it is evident that any fuel may be used-as, for instance, coal, peat, wood, oil, &c.--by simply building the ordinary fire-box under the boiler at the most convenient point. I do not intend to be limited to the use of gas as fuel, although I preferably make use of it.

It is evident upon inspection of the drawings that the connection between the watereirculating hood and the water-tube may be made by riveting or otherwise fastening connecting-pipes to the top surface of the watertube and the under surface of the water-circulating hood and in this way of constructing the generator a steam and water drum would be unnecessary, and for small usessuch as bath-water, greenhouse, and small plant-house heating-the water-circulation would be maintained through both the water-tube and watercirculating hood and a very cheap but serviceable generator had, affording all the heatingsurface possible, and doing away with the use of headers, as shown at D.

Having described my invention so that those skilled in the art to which it appertains may make and use the same, what I claim, and de sire to secure by Letters Patent, is"

l. A steam-generator having water-tubes, and a furnace arranged under said water-tubes for heating them, and hoods or bonnets arranged over said water-tubes, said hoods or bonnets being conduits and connected with the generator, so that the water in the generator will circulate through the generator, the hoods, and the water tubes, substantially as described.

2. A steam-generator having water-tubes, and hoods or bonnets arranged over said water-tubes, said hoods or bonnets being conduits and connected with the generator, so that the water in the generator will circul'ate through the generator, the hoods, and water-tubes, the hoods having passage-ways through them for the escape of the products of combustion, and a furnace arranged under the water-tubes for heating the same, substantially as described.

3. In a steam-generator, a water-tube having gas-burners arranged in proximity to it for the purpose of heating said water-tube, and a hood or bonnet arranged over said water-tube, said hood or bonnet being a conduit and having passageways through it for the escape of the product-s of combustion, said hood and said water-tube being connected together, so that the water contained in them will circulate through them when heated, substantially as described.

4. In a steam-generator, a water tube having a hood or bonnet arranged over it, said hood or bonnet being a conduit and having openings through it for the escape of the pro ducts of combustion, and heat-producing burners arranged under said water-tube for heating the same, said water-tube and said hood being connected with the generator, so that the water in said generator, hood, and watertube will circulate through them when heated, substantially as described.

In testimonywhereof I affix my signature in presence of two witnesses.

WALTER MORTON BROWN.

Witnesses:

EDWARD P. FAY, JOHN J. 'BYRNE. 

